If you have whey protien you can use water with it. It will just be thinner. Do you have any DaVincci or other flavored syrups to add? What about fruits, yogurt or so on?

Maybe make up some chicken broth and easy to tongue veggies? If you do go out, go ahead and pick up soem unsweetened yogurt for a treat or to mix with smoothy. It is carby, but limiting a serving to a half cup is only 5-8g carbs.